Home / 72,041.25-99,407.75-40,211.49

Finding the Fourth Proportional to 72,041.25, 99,407.75 and 40,211.49

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Solution

The fourth proportional to 72,041.25, 99,407.75 and 40,211.49 is: 55,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,041.25 : 99,407.75 = 40,211.49 : x
  2. Step 2: Convert to fraction form
    72,041.25/99,407.75 = 40,211.49/x
  3. Step 3: Cross multiply
    72,041.25x = 99,407.75 × 40,211.49
  4. Step 4: Simplify right side
    72,041.25x = 3,997,333,543.99
  5. Step 5: Solve for x
    x = 3,997,333,543.99/72,041.25
  6. Step 6: Final answer
    x = 55,486.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.